Dental pliers for holding teeth.



J. W. TROSPBR. DENTAL PLIERS FOR HOLDING TEETH.

APPLICATION FILED FEB.20, 1911. Patented Nov. 7, 1911.

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TROSPER, OF TEKOA, WASHINGTON.

DENTAL PLIERS FOR HOLDING TEETH.

To all whom it may concern:

Be it known that I, JAMES W. TRosrER, a citizen of the United States,residing at 'Iekoa, in the county of Whitman and State of Washingtonhave invented certain new and useful Improvements in Dental Pliers forHolding Teeth; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to improvements in dental pliers for holdingteeth.

One object of the invention is to provide an improved construction ofdental pliers for use in fastening artificial teeth or tooth facings toa backing or bridge while the latter is in place in the mouth, and whichis particularly adapted for repairing 'work of this character in whichthe artificial tooth or tooth facing has been broken off.

Another object is to provide a tool of this character which may bereadily employed on either the right or left side of the mouth or on theupper and lower jaw teeth and which is provided with means to preventinjury to the teeth or facings and by means of which the ends of thefastening pins or rivets of the teeth may be headed and smoothlyburnished on the inner side of the backing or bridge without injuring orinterfering with the hardening of the cement and without pain ordiscomfort to the patient.

With the above and other objects in view, the invention consists ofcertain novel features of construction, combination and ar rangement ofparts as will be more fully described and particularly pointed out inthe appended claims.

In the accompanying drawings: Figure 1 is a side view of a pair ofpliers constructed in accordance with my invention; Fig. 2 is anenlarged side view of the upper end or jaws of the pliers showing infull.

and dotted lines difl'erent positions to which the swiveled anvil on oneof the jaws may be turned; Fig. 3 is an enlarged longitudinal sectionalview through the parts shown in Fig. 2; Fig. 4 is a detail perspectiveview of the anvil removed from the jaw.

Referring more particularly to the drawings 1 and 2 denote the handlesof the pliers, said handles being pivotally connected together neartheir outer ends as shown. On the outer end of the handle 1 is formed acurved Specification of Letters Patent.

Application filed February 20, 1911.

Patented Nov. *7, 1911. Serial No. 609,635.

jaw 3 having on its outer end an exteriorly threaded socket 4. Connectedto the socket 4 is a swiveled anvil or bearing block 5 which is slightlyconcaved and has arranged on its outer side a ball 6 which is adapted tobe inserted in the socket 4: and is held in operative engagementtherewith by a sleeve or cap 7 the outer end of which is crimped orcontracted around the inner portion of the ball and which has its outerend threaded internally to engage the threaded exterior surface of thesocket whereby when said sleeve is screwed onto the socket the ball willbe held in operative engagement therewith and the anvil block thusswiveled to the jaw to permit said block to swing or turn in anydirection. Secured to the outer side of the anvil or bearing block 5 isa facing or lining 8 formed of rubber or other yielding material whichwill prevent the block from injuring the tooth or facing when engagedtherewith. On the outer end of the handle 1 is formed an inwardly curvedjaw 9 having formed on its outer end a riveting head 10 which ispreferably of spherical form and is adapted to coact with the anvil orbearing block for the purpose of upsetting or riveting the ends of thepins against the inner side of the backing or bridge work to which thetooth or facing is being applied.

In using the pliers the tooth or facing and the backing or bridge areprepared in the usual manner and cement applied to the parts. The bridgeor backing is drilled to receive the ends of the pins or rivets of thetooth and the inner side of the facing or bridge is reamed out aroundthe inner ends of the rivet holes to form counter-sinks. The tooth orfacing is now placed in position with the rivets projecting through theholes in the backing or bridge. With the tooth in this position thepliers are applied with the rubber face of the anvil engaging the outerside of the tooth or facing and the spherical head on the other jawengaging the projecting end of the rivet or pin. Pressure is now appliedto the handles of the pliers to cause the spherical head of the jaw 9 tofirst upset or head the end of the pin or rivet into the counter sinkformed in the inner side of the backing or bridge after which thehandles of the pliers are moved or swung around in difi'erent directions thus passing the spherical head back and forth over the headed endof the rivet and thereby burnishing or smoothing said end. 'In thusmoving or swinging the pliers around the swiveled connection between theouter end of the jaw 3 and the anvil or bearing block 5 permits thelatter to remain in the same position against the outer side of thetooth or facing. After one of the pins or rivets of the tooth has thusbeen headed the head 10 on the jaw 9 is engaged with the other pin andthe operation repeated. By means of a pair of pliers constructed inaccordance with my invention it will be seen that the ends of the rivetsor pins of the tooth are effectually headed solely by the pressure andrubbing movement of the riveting head of the tool with out striking orjarring the tooth in any way or interfering with the cement used inconnection with the setting of the tooth and without pain or discomfortto the patient.

From the foregoing description taken in connection with the accompanyingdrawings, the construction and operation of the invention will bereadily understood without requiring a more extended explanation.

Various changes in the form, proportion and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of the invention as defined in theappended claims.

Having thus described my invention, what I claim is:

1. A pair of dental pliers comprising pivotally connected handles, ananvil jaw formed on one of said handles, a riveting jaw formed on theother handle, an anvil block having a universal joint connection withthe end of the said anvil jaw, and a riveting head formed on the outerend of said riveting jaw.

2. A pair of dental pliers comprising pivotally connected handles,inwardly curved jaws formed on the outer ends of said handles, one ofsaid jaws having a threaded socket, an anvil block having arrangedthereon a ball adapted to engage said socket, an internally threadedsleeve arranged on said ball and adapted to be screwed into engagementwith the socket whereby the anvil block is connected to the jaw to turnin any direction, a resilient facing secured to the outer side of saidblock and a spherical riveting head formed on the outer end of theopposing jaw.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

JAMES W. TROSPER.

Witnesses:

E. A. VVILLIAMs, T. D. LAKE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

